By eating many fruits and vegetables in place of fast food and junk food, people could avoid obesity.
The number of kids affected by obesity has tripled since 1980, and this can be traced in large part to lack of exercise and a healthy diet.
This is what people don't understand: obesity is a symptom of poverty. It's not a lifestyle choice where people are just eating and not exercising. It's because kids - and this is the problem with school lunch right now - are getting sugar, fat, empty calories - lots of calories - but no nutrition.
Getting kids moving is a key factor in tackling obesity and health problems among the young.
The causes of obesity are varied and complex, but the lack of daily physical activity is an important factor.
In our fast-forward culture, we have lost the art of eating well. Food is often little more than fuel to pour down the hatch while doing other stuff - surfing the Web, driving, walking along the street. Dining al desko is now the norm in many workplaces. All of this speed takes a toll. Obesity, eating disorders and poor nutrition are rife.
Given that the biggest rise in childhood obesity rates are occurring in children ages 3 to 5 years, we must modify our efforts to place an emphasis on prevention versus intervention.
This might be the first generation where kids are dying at a younger age than their parents and it's related primarily to the obesity problem.
We struggle with eating healthily, obesity, and access to good nutrition for everyone. But we have a great opportunity to get on the right side of this battle by beginning to think differently about the way that we eat and the way that we approach food.
I don't know too many parents that want to feed their kids soda, but high-fructose corn syrup is cheap. The price of soda in 20 years has gone down 40 percent while the price of whole foods, fruits and vegetables, has gone up 40 percent and obesity goes up right along that curve.